Title:
MICROWAVE TRANSMISSION LINE INTEGRATED MICROWAVE GENERATING ELEMENT AND MICROWAVE TRANSMISSION LINE INTEGRATED MICROWAVE DETECTING ELEMENT
Document Type and Number:
WIPO Patent Application WO/2006/101040
Kind Code:
A1
Abstract:
A microwave generating and microwave detecting portions of an electronic circuit are made highly efficient and downsized. A microwave generating element (A) comprising a lower electrode (1), a magnetoresistive element forming layer (3) formed in an insular form on the lower electrode (1), an insulation element (7) formed on the lower electrode (1) so as to surround the magnetoresistive element forming layer (3), and an upper electrode (5) formed on the insulation element (7) and the magnetoresistive element forming layer (3). The magnetoresistive element forming layer (3) has, sequentially from the lower electrode (1) side, a magnetizing fixed layer (3a), an intermediate layer (3b) and a magnetizing free layer (3c). The magnetizing free layer (3c), which must produce resonance vibration, is preferably, for example, up to 200 nm square in sectional area size and about 1-5 nm in film thickness. The magnetizing fixed layer (3a) requires at least about ten times the thickness of the magnetizing free layer (3c) if it is made of a single material. It is possible to use a magnetic metal multilayer film using antiferromagnetic coupling as the magnetizing fixed layer (3a).
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Inventors:
SUZUKI YOSHISHIGE (JP)
YUASA SHINJI (JP)
FUKUSHIMA AKIO (JP)
TULAPURKAR ASHWIN (US)
YUASA SHINJI (JP)
FUKUSHIMA AKIO (JP)
TULAPURKAR ASHWIN (US)
Application Number:
PCT/JP2006/305379
Publication Date:
September 28, 2006
Filing Date:
March 17, 2006
Export Citation:
Assignee:
JAPAN SCIENCE & TECH AGENCY (JP)
SUZUKI YOSHISHIGE (JP)
YUASA SHINJI (JP)
FUKUSHIMA AKIO (JP)
TULAPURKAR ASHWIN (US)
SUZUKI YOSHISHIGE (JP)
YUASA SHINJI (JP)
FUKUSHIMA AKIO (JP)
TULAPURKAR ASHWIN (US)
International Classes:
H03B15/00; H01L43/08; H01Q23/00
Foreign References:
| JP2005025831A | 2005-01-27 | |||
| JP2003318465A | 2003-11-07 | |||
| JP2004312566A | 2004-11-04 | |||
| JP2000353920A | 2000-12-19 |
Other References:
KISELEV S.I. ET AL.: "Microwave oscillations of a nanomagnet driven by a spin-polarized current", NATURE, vol. 425, 25 September 2003 (2003-09-25), pages 380 - 383, XP002329287
SUZUKI Y. ET AL.: "Spin Chunyu Jika Hanten Soshi no Koshuha Tokusei", SPIN-RYU KUDO DEVICE NO SAIZENSEN, 30 January 2006 (2006-01-30), pages 49 - 55, XP003005250
TULAPURKAR A.A. ET AL.: "Spin-torque diode effect in magnetic tunnel junctions", NATURE, vol. 438, 17 November 2005 (2005-11-17), pages 339 - 342, XP003005251
OYO BUTURI: "Flip-chip type Gunn diode, Atsushi Nakagawa, Ken-ichi Watanabe", FLIP-CHIP GUNN DIODE, vol. 69, no. 2, 2000, pages 182
S. I. KISELEV; J. C. SANKEY; I. N. KRIVOROTOV; N. C. EMLEY; R J. SCHOELKOPF; R A. BUHRMAN; D. C. RALPH: "Microwave oscillations of a nanomagnet driven by a spin-polarized current", NATURE, vol. 425, 2003, pages 380, XP002329287, DOI: doi:10.1038/nature01967
FUKUSHIMA ET AL., JPN. J. APPL. PHYS., vol. 44, pages L12 - 14
S. YUASA; T. NAGAHAMA; A. FUKUSHIMA; Y. SUZUKI; K. ANDO: "Giant room-temperature magnetoresistance in single-crystal Fe/MgO/Fe magnetic tunnel junctions", NATURE MATERIAL, vol. 3, 2004, pages 868, XP055056296, DOI: doi:10.1038/nmat1257
A. FUKUSHIMA ET AL., JPN. J. APPL. PHYS., vol. 44, pages L12 - 14
See also references of EP 1860769A4
SUZUKI Y. ET AL.: "Spin Chunyu Jika Hanten Soshi no Koshuha Tokusei", SPIN-RYU KUDO DEVICE NO SAIZENSEN, 30 January 2006 (2006-01-30), pages 49 - 55, XP003005250
TULAPURKAR A.A. ET AL.: "Spin-torque diode effect in magnetic tunnel junctions", NATURE, vol. 438, 17 November 2005 (2005-11-17), pages 339 - 342, XP003005251
OYO BUTURI: "Flip-chip type Gunn diode, Atsushi Nakagawa, Ken-ichi Watanabe", FLIP-CHIP GUNN DIODE, vol. 69, no. 2, 2000, pages 182
S. I. KISELEV; J. C. SANKEY; I. N. KRIVOROTOV; N. C. EMLEY; R J. SCHOELKOPF; R A. BUHRMAN; D. C. RALPH: "Microwave oscillations of a nanomagnet driven by a spin-polarized current", NATURE, vol. 425, 2003, pages 380, XP002329287, DOI: doi:10.1038/nature01967
FUKUSHIMA ET AL., JPN. J. APPL. PHYS., vol. 44, pages L12 - 14
S. YUASA; T. NAGAHAMA; A. FUKUSHIMA; Y. SUZUKI; K. ANDO: "Giant room-temperature magnetoresistance in single-crystal Fe/MgO/Fe magnetic tunnel junctions", NATURE MATERIAL, vol. 3, 2004, pages 868, XP055056296, DOI: doi:10.1038/nmat1257
A. FUKUSHIMA ET AL., JPN. J. APPL. PHYS., vol. 44, pages L12 - 14
See also references of EP 1860769A4
Attorney, Agent or Firm:
Hiraki, Yusuke (3-20 Toranomon 4-chom, Minato-ku Tokyo 01, JP)
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